Igowalker (previously called Infowalker Go Viewer, or IGV) is an environment for publishing and viewing narrative-centric go content, including game commentaries and teaching materials. In that sense, it's not really a go editor like the other programs on this page. Authoring is done in HTML, augmented by simple markup which links sentences to move sequences in an SGF file. The end-user can "walk through" the text, with a dynamic go board showing the moves being discussed in the commentary. Viewing requires nothing more than a web browser, although for the time being support is limited to IE6. The site http://www.igowalker.com has a moderate amount of content, and Igowalker is also available under license for personal publishing of go materials.